Definition

Data Type

Version Number

2.0

Usage Information

This attribute is a four-level code, ranging from level 1 through level 4, in which each level corresponds to an authentication mechanism assurance level defined in Section 8.2 ("Authentication Mechanism Requirements") of NIST Special Publication 800-63, "Electronic Authentication Guideline", published in April 2006.

If there is a SAML authentication context associated with the SAML assertion containing this attribute, then the NIST level conveyed by this element MUST be consistent with the type of authentication conveyed by the SAML authentication context.